What are the opening hours?

Monday 5am - 8:30pm Tuesday 5am - 8:30pm Wednesday 5am - 8:30pm Thursday 5am - 8:30pm Friday 5am - 8:30pm Saturday 6am - 2pm

Core FSN

EDUCATE, MOTIVATE, DOMINATE
Promote a winning environment that provides athletes the opportunity to grow physically, mentally, and emotionally.

Through each athletes commitment to hard work, success is the ultimate reward. Core FSN provides adult group training and youth speed, agility and strength training to the Saint Charles, IL, area. Keeping Physical and Mental Wellness a Priority in Your Daily Life
At Core FSN, adults work one-on-one with a trainer and coach or in a group setting. Teen, middle-school and youth athletes have a dedica

ted space and a team of coaches to help foster their progress. Our classes focus on optimizing strength and improving overall fitness. We also have a dedicated “workout of the day,” and a range of daily classes and sessions. We created CoreFSN to “fit “in with your daily lifestyle, goals, and availability. A healthy way of eating supports a healthy way of living. Core Nutrition is a place to refuel and rebuild post-workout and your destination when you’re looking for a “meal on the go” that won’t be detrimental to your healthy lifestyle.

06/18/2026

Why was he so good at this 🤣
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
ADULTS:
Monday through Thursday:
5am, 6am, 7am, 8am, 9am, 5pm
Friday:
5am, 6am, 7am, 8am, 9am
Saturday:
7am

KIDS:
Monday, Wednesday, Friday:
11am - 1pm
Tuesday, Thursday:
4:30pm - 6:30pm
Saturday:
9am - 11am
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit Core Nutrition STC for more on balanced meals & elevated energy

06/17/2026

It be like that 😅
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
ADULTS:
Monday through Thursday:
5am, 6am, 7am, 8am, 9am, 5pm
Friday:
5am, 6am, 7am, 8am, 9am
Saturday:
7am

KIDS:
Monday, Wednesday, Friday:
11am - 1pm
Tuesday, Thursday:
4:30pm - 6:30pm
Saturday:
9am - 11am
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit Core Nutrition STC for more on balanced meals & elevated energy

06/16/2026

The price we pay 😆
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
ADULTS:
Monday through Thursday:
5am, 6am, 7am, 8am, 9am, 5pm
Friday:
5am, 6am, 7am, 8am, 9am
Saturday:
7am

KIDS:
Monday, Wednesday, Friday:
11am - 1pm
Tuesday, Thursday:
4:30pm - 6:30pm
Saturday:
9am - 11am
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit Core Nutrition STC for more on balanced meals & elevated energy

06/12/2026

guess we are doing them anyways 😩
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
ADULTS:
Monday through Thursday:
5am, 6am, 7am, 8am, 9am, 5pm
Friday:
5am, 6am, 7am, 8am, 9am
Saturday:
7am

KIDS:
Monday, Wednesday, Friday:
11am - 1pm
Tuesday, Thursday:
4:30pm - 6:30pm
Saturday:
9am - 11am
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit Core Nutrition STC for more on balanced meals & elevated energy

06/11/2026

06/10/2026

that’ll do it 😩😆
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
ADULTS:
Monday through Thursday:
5am, 6am, 7am, 8am, 9am, 5pm
Friday:
5am, 6am, 7am, 8am, 9am
Saturday:
7am

KIDS:
Monday, Wednesday, Friday:
11am - 1pm
Tuesday, Thursday:
4:30pm - 6:30pm
Saturday:
9am - 11am
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit for more on balanced meals & elevated energy

06/08/2026

🤣🤣
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
ADULTS:
Monday through Thursday:
5am, 6am, 7am, 8am, 9am, 5pm
Friday:
5am, 6am, 7am, 8am, 9am
Saturday:
7am

KIDS:
Monday, Wednesday, Friday:
11am - 1pm
Tuesday, Thursday:
4:30pm - 6:30pm
Saturday:
9am - 11am
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit for more on balanced meals & elevated energy

06/05/2026

I just need a minute 😩
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
ADULTS:
Monday through Thursday:
5am, 6am, 7am, 8am, 9am, 5pm
Friday:
5am, 6am, 7am, 8am, 9am
Saturday:
7am

KIDS:
Monday, Wednesday, Friday:
11am - 1pm
Tuesday, Thursday:
4:30pm - 6:30pm
Saturday:
9am - 11am
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit for more on balanced meals & elevated energy

06/01/2026

Congrats Nancy! 💪🏼🤗💕
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
ADULTS:
Monday through Thursday:
5am, 6am, 7am, 8am, 9am, 5pm
Friday:
5am, 6am, 7am, 8am, 9am
Saturday:
7am

KIDS:
Monday, Wednesday, Friday:
11am - 1pm
Tuesday, Thursday:
4:30pm - 6:30pm
Saturday:
9am - 11am
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit for more on balanced meals & elevated energy

05/28/2026

What if you SHINE ✨🥹
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
ADULTS:
Monday through Thursday:
5am, 6am, 7am, 8am, 9am, 5pm
Friday:
5am, 6am, 7am, 8am, 9am
Saturday:
7am

KIDS:
Monday, Wednesday, Friday:
11am - 1pm
Tuesday, Thursday:
4:30pm - 6:30pm
Saturday:
9am - 11am
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit for more on balanced meals & elevated energy

Address

731 N 17th Street , Unit 10
Saint Charles, IL
60174

Opening Hours

Monday	5am - 8:30pm
Tuesday	5am - 8:30pm
Wednesday	5am - 8:30pm
Thursday	5am - 8:30pm
Friday	5am - 8:30pm
Saturday	6am - 2pm

Telephone

+16304036495

Website

http://www.corefsn.com/

Alerts

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